Connect-MCP

Quaderno MCP by usefulapi

io.usefulapi/quaderno · v1.11.1

MCP server for Quaderno — tax-rate calculation, invoices, contacts, products, receipts & expenses.

MCPremoteno credentialsFinanceE-commerceKnowledge & docs

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Last check

Reachable, 23 tools, protocol 2025-06-18 · checked 2026-10-17

Test & rating

B 88/100

What it does: 23 tools · 18 read, 5 write (incl. delete/pay) · Finance, Developer tools, E-commerce

Test call ping: needs a key: HTTP 401 (1,062 ms)

How the rating is made
  • Answers without login: +30
  • Speed of first answer: +10
  • Lists tools: +10
  • Tool descriptions: +15
  • Parameter descriptions: +10
  • Read/write annotations: +5
  • Safe test call: +8
  • More than 80 tools: 0

Tested 2026-10-17. Fixed rules, no AI model. Grade A needs a successful real call.

Install

Remote URL
https://quaderno.usefulapi.io/mcp

Tools

23 tools listed at last check
  • ping Verify the API key and connection by pinging Quaderno. Returns account/authentication status. Quaderno API: GET /ping.
  • calculate_tax Calculate the correct tax rate/amount for a sale given the customer's location and product. This is Quaderno's flagship endpoint — it applies the right VAT / GST / US sales-tax rules per jurisdiction. READ-ONLY (no record is created). Quaderno API: GET /tax_rates/calculate. Returns { name, rate, cou
  • list_invoices List invoices, newest first, with optional filters. Quaderno API: GET /invoices. Returns invoice objects (id, number, issue_date, due_date, currency, contact, items, taxes, payments, state, total_cents, subtotal_cents), wrapped as { data, pagination } when more pages exist.
  • get_invoice Fetch a single invoice by id (full object incl. items, taxes, payments, permalink, pdf). Quaderno API: GET /invoices/{id}.
  • list_contacts List contacts (customers/vendors), newest first. Quaderno API: GET /contacts. Returns contact objects (id, kind, first_name, last_name, contact_name, email, country, tax_id, tax_status, …), wrapped as { data, pagination } when more pages exist.
  • get_contact Fetch a single contact by id. Quaderno API: GET /contacts/{id}.
  • list_items List products/items in the catalog, newest first. Quaderno API: GET /items. Returns item objects (id, code, name, kind, product_type, unit_cost, tax_class, tax_type, currency, stock, …), wrapped as { data, pagination } when more pages exist.
  • get_item Fetch a single product/item by id. Quaderno API: GET /items/{id}.
  • list_credit_notes List credit notes (refund documents), newest first. Quaderno API: GET /credit_notes. Wrapped as { data, pagination } when more pages exist.
  • get_credit_note Fetch a single credit note by id. Quaderno API: GET /credit_notes/{id}.
  • list_receipts List receipts, newest first. Quaderno API: GET /receipts. Wrapped as { data, pagination } when more pages exist.
  • get_receipt Fetch a single receipt by id. Quaderno API: GET /receipts/{id}.
  • list_expenses List expenses (bills you received), newest first. Quaderno API: GET /expenses. Wrapped as { data, pagination } when more pages exist.
  • get_expense Fetch a single expense by id. Quaderno API: GET /expenses/{id}.
  • list_tax_codes List the product tax codes Quaderno supports (id, name, description) — used as the tax_code on products / tax calculations. Quaderno API: GET /tax_codes.
  • list_jurisdictions List the tax jurisdictions (id, name, country, region) where the account is registered to collect tax. Quaderno API: GET /jurisdictions.
  • list_webhooks List the account's configured webhooks (id, url, events). Quaderno API: GET /webhooks.
  • quaderno_request Power-user escape hatch: GET any Quaderno API path not wrapped by a dedicated tool. READ-ONLY — only GET is allowed. Path is taken after /api (e.g. "/tax_ids", "/evidence"). Quaderno API: GET {path}.
  • create_contact MUTATES Quaderno data — create a contact (customer or vendor). Provide kind plus a name; use `fields` for any other Quaderno contact attribute (phone_1, region, postal_code, city, street_line_1/2, tax_status, language, discount, notes, processor/processor_id). Quaderno API: POST /contacts. Returns t
  • update_contact MUTATES Quaderno data — update an existing contact. Only the fields you pass are changed; use `fields` for any attribute not typed here. Quaderno API: PUT /contacts/{id}. Returns the updated contact.
  • create_item MUTATES Quaderno data — create a product/item in the catalog. Provide name + unit_cost; use `fields` for any other attribute (code, description, tax_class, tax_type, currency, country, stock). Quaderno API: POST /items. Returns the created item.
  • create_invoice MUTATES Quaderno data — create an invoice for a contact. Provide contact_id (or a contact via `fields`) and items; use `fields` for any other attribute (currency, issue_date, due_date, po_number, notes, tag_list, custom_metadata, payment_details). Each item = { description, quantity, unit_price, tax
  • create_transaction MUTATES Quaderno data — record a sale or refund transaction (Quaderno computes tax and produces the compliant document). Provide the customer, items, and payment. Use `fields` for any other attribute (date, currency, shipping_address, evidence, processor, processor_id, processor_fee_cents, exchange_

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